Do you understand how bitmaps and raster drawing works? Everything is represented as a 2d array of pixels. The circle selection before you paint can be moved/scaled/etc and then when you actually want to draw the circle trace the path with the appropriate thickness and use antialiasing if you need to smooth it.
If you want to make vector drawings, take a look at InkScape. GIMP is the wrong tool for that, so use the right tool for the job if that’s what you want to do.
What’s the problem with making a circle with the select tool and then tracing it or filling it? It’s not hard to make a circle in GIMP…
That’s not a circle, that’s a grid of pixels being colored in. It’s a lossy representation of something else.
A circle is a shape which is a graphics primitive. Graphics primitives can be moved, transformed, skewed, etc… with no loss of information.
If you do that with a grid of pixels, you’re going to lose information.
Do you understand how bitmaps and raster drawing works? Everything is represented as a 2d array of pixels. The circle selection before you paint can be moved/scaled/etc and then when you actually want to draw the circle trace the path with the appropriate thickness and use antialiasing if you need to smooth it.
If you want to make vector drawings, take a look at InkScape. GIMP is the wrong tool for that, so use the right tool for the job if that’s what you want to do.
You want a vector editing software like inkscape. GIMP only does rasterized graphics.